1. the act or process of changing something in order to improve it or make it more suitable
2. a change that has been made to something

Examples

• The car underwent several modifications to improve its performance.
• We made a small modification to the original plan.
• The software requires modification before it can be released.
• His behavior modification program was very successful.
• The building plans need some modifications to meet safety codes.
• She suggested a modification to the recipe to make it healthier.
• The contract includes a modification clause for future changes.